@@ -42,7 +42,7 @@ elif condition3:
 	# code
 
 else:
-	# no else
+	# else
 }}}
 
 Note: This is a syntax demonstration, you can't have empty blocks in Python. If you want to "do nothing", use ''pass'' keyword. Like so:
 
@@ -24,6 +24,6 @@ Created Thursday 14 January 2021
 	"day" in "Monday, return 
 
 **String methods**
-1. string.''strip()'' -> a string - removes the ending characters maximally w.r.t to the given string, until a unknown character is encountered
+1. string.''strip()'' -> a string - removes the ending characters maximally w.r.t to the given string, until a unknown character is encountered.
 2. string.''split([sep=whitespace, [max_splits=-1]])'' - returns a list of strings which were seperated by 'sep' in the "string"
 3. sep''.join(''iterable of strings'')'' -> a string - joins the list/set/dict into a string seperated by sep, solves terminating comma-like problems.
@@ -30,7 +30,9 @@ Common operations:
 4. list(string) returns a list of the characters.
 
 === **Spread operator** - asterisk ===
-The spread operator is a very powerful and useful syntax sugar.
+* The spread operator is a very powerful and useful syntax sugar.
+* Used for list, set.
+* Double asterisk is used for dict.
 {{{code: lang="python3" linenumbers="True"
 x = [1, 2]
 y1 = list(x)+[3] # old style
 
@@ -10,7 +10,7 @@ Reading is very easy.
 	a. path can be relative(. and ..) or absolute. Just write file name if we are in the same directory.
 	b. File will be created, only in **w **mode.
 	c. Modes are discussed ahead.
-2. reading - check file.readable() == True
+2. reading - check ''file.readable()''
 	a. readline() - line by line, one line as a string at a time
 	b. readlines()  - returns a list of lines as strings
 	c. read() - returns the whole file as a string
@@ -27,7 +27,7 @@ f.close()
 * There's a fail-proof method for reading files - using **with **keyword, this tidies up the object after execution. Files support this. **with **also returns an exception if an **error occurs. **This is called a context Manager.
 This helps us release the file once we are done working on it:
 {{{code: lang="python3" linenumbers="True"
-with open('file.ext', 'r') as f: # same syntax as import
+with open('file.ext', 'r') as f: # same syntax as import, object of interest at the end
 	for line in f:
 		print(line, end='')
 # no need to close the file
 
@@ -25,4 +25,4 @@ data[0]=2 # throws an error that tuples are immutable - demonstrates successful
 }}}
 
 eval() evaluates any string passed to **it as legitimate parts** of the programs.
-**Note:**  eval() is not a good thing, coz it can be source of problems. Obviously. There are better ways to do it. As it could write/corrupt the file and/or have damaging unintended instructions while reading.
+**Note:**  eval() is not a good thing, coz it can be source of problems. Obviously. There are better ways to do it. As it could write/corrupt the file and/or have damaging/unintended instructions while reading.
@@ -1,5 +1,5 @@
 Content-Type: text/x-zim-wiki
-Wiki-Format: zim 0.4
+Wiki-Format: zim 0.6
 Creation-Date: 2020-05-14T16:35:39+05:30
 
 ====== 1. Issues with Shelve ======
@@ -20,11 +20,11 @@ Created Thursday 14 May 2020
 * file.sync() clears the cache.
 {{{code: lang="python3" linenumbers="True"
 with shelve.open('recipies') as recipies:
-	recipies['blt'].append('butter')	#does not update
+	recipies['blt'].append('butter')	#does not update in file
 
 with shelve.open('recipies') as recipies:
 	temp_list = recipies['blt']
-	temp_list.append('butter')	#updates the list
+	temp_list.append('butter')	#updates the list in file
 }}}
 
 **Remember**: Only values are tangible(printable, processable), not metadata like keys(), values() etc. All values are **returned by** **value**. This is **practical** because a single entry can be worked upon rather than millions of data entries. **This is why append does not work.**
 
@@ -9,13 +9,13 @@ Created Friday 15 January 2021
 The sole purpose of using default params is that we can skip them in the function call. The order exists because if default params came:
 	* Before or in between non-default - default args won't be skippable in function call(they'd have to be passed explicitly), thereby defeating their purpose.
 {{{code: lang="python3" linenumbers="True"
-def fun1(a="who is you", b="True", x, y):
+def fun1(a="who are you", b="True", x, y):
 	print (a,b,x,y)
 
 f("a arg", "b arg", 1, 2) # what's the use of default args
 }}}
 
-	* Hypothetically, it can be argued that even if the interpreter //were// made to //skip //default params; 'a' and 'b' in this case, and if we allowed for mixing the params. It would be impossible judge whether the arguments were supposed to be for a default or a non-default argument. It is ambiguos. 
+	* Hypothetically, it can be argued that even if the interpreter //were// made to //skip //default params; 'a' and 'b' in this case, and if we allowed for mixing the params. It would be impossible judge whether the arguments were supposed to be for a default or a non-default argument. It is ambiguous. 
 {{{code: lang="python3" linenumbers="True"
 func1("ok a", "ok b", 1) # is "ok a" meant for 'a' or 'b'
 }}}
 
@@ -7,7 +7,7 @@ Created Tuesday 12 January 2021
 
 Modules are accessed by importing them, using the ''import'' keyword.
 
-When the interpreter executes an ''import'' statement, it searches the in the //in-built modules **first**//. If not found, it looks at ''sys.path'' which is initalized based on these sources:
+When the interpreter executes an ''import'' statement, it searches the //in-built modules **first**//. If not found, it looks at ''sys.path'' which is initalized based on these sources:
 1. Current directory - location where the interpreter was started, may not be the place where the top-level script is present.
 2. PYTHONPATH (a list of directory names, copy of the terminal shell variable called PATH).
 3. An installation-dependent list of directories configured at the time Python is installed. This contains modules installed using pip.